An embodiment of the invention discloses an information output method and device. One specific implementation mode of the method includes the steps: receiving voice information and analyzing the voiceinformation to generate vocal print information; matching the vocal print information with at least one piece of prestored vocal print information; responding to determination that the vocal print information is mismatched with each piece of the prestored vocal print information, outputting voice questioning information for determining whether to add new users or not, and receiving voice reply information returned by a user based on the questioning information; responding to determination that the voice reply information indicates addition of the new users, and outputting voice prompt information for prompting the user to bind an account. By the implementation mode, man-machine interaction flexibility is improved.